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Day 236: JEE Mains Chemistry

5 questions. Try each one first, then open its answer.

  1. Question 1

    The d- and f-Block Elements. Asked once: 1 Feb 2024 (same type asked 4 times) See all 4 of this type

    121
    The transition metal having highest 3rd 3^{\text{rd~}} ionisation enthalpy is:

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  2. Question 2

    Biomolecules. Asked once: 2021 Paper 25 (same type asked 4 times) See all 4 of this type

    41
    Which of the following vitamin is helpful in delaying the blood clotting?

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  3. Question 3

    Chemical Thermodynamics. Asked once: 27 Jan 2024 (same type asked 4 times) See all 4 of this type

    145
    For a certain thermochemical reaction M→NM \rightarrow N at T=400 K,ΔH⊖=77.2 kJ mol−1,ΔS=122JK−1T = 400\text{ }K,\Delta H^{\ominus}= 77.2\text{ }kJ{\text{ }mol}^{- 1},\Delta S = 122JK^{- 1}, log⁡\log equilibrium constant (log⁡K)(\log K) is - _______ ×10−1\times10^{- 1}.

  4. Question 4

    Coordination Compounds. Asked once: 5 Apr 2024 (same type asked 4 times) See all 4 of this type

    136
    The number of complexes from the following with no electrons in the t2t_{2} orbital is ____ .
    TiCl4,[MnO4]−,[FeO4]2−,[FeCl4]−,[CoCl4]2−TiCl_{4},\left\lbrack MnO_{4} \right\rbrack^{-},\left\lbrack FeO_{4} \right\rbrack^{2 -},\left\lbrack FeCl_{4} \right\rbrack^{-},\left\lbrack CoCl_{4} \right\rbrack^{2 -}

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  5. Question 5

    Amines. Asked once: 29 Jan 2023 (same type asked 4 times) See all 4 of this type

    123
    Reaction of propanamide with Br2/KOH(aq)Br_{2}/KOH(aq) produces:

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